Hey i'm playing this for the first time and Jenna's sprite is her one from Echo? And all my saves from the original Echo also show up? The saves aren't a big deal but is that supposed to be her sprite? 
Yeah that's the correct sprite. I'm pretty sure it was initially developed for Route 65 actually but was then also used as her sprite in the main game since her old sprite didn't match with the current art style.
Yeah, thats the right sprite.
Its even mentioned in Echo that Jenna looks the same as she did when route 65 happened.